Is Castle Rock, Colorado tap water safe?

8 water systems report serving Castle Rock. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.

B

Town of Castle Rock

Serves 110,298 people · Surface water · Full report →
No health-based violations in the last 5 years; 8 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
B

Parker WSD

Serves 75,949 people · Surface water · Full report →
No health-based violations in the last 5 years; 6 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
A

Castle Pines North Md

Serves 12,800 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Castle Pines Village Md

Serves 5,656 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Consolidated Bell Mtn Ranch Md

Serves 1,162 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A

Beverly Hills Mutual WC

Serves 325 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A

Silver Heights WSD

Serves 301 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
A

Solitude Md

Serves 40 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file.